DOI QR코드

DOI QR Code

A Study on Quantitative Evaluation Method for Risk of Work-related Musculoskeletal Disorders Associated with Back Flexion Posture

작업관련성 근골격계질환에 있어서 작업자세 위험도의 정량적 평가방법에 대한 연구 -허리 굴곡 자세를 중심으로-

  • Park, Dong Hyun (Dept. of Industrial Engineering, Inha University) ;
  • Noh, An Na (Dept. of Industrial Engineering, Inha University) ;
  • Choi, Seo Yeon (Dept. of Social & Preventive Medicine, Inha University)
  • Received : 2014.01.20
  • Accepted : 2014.03.17
  • Published : 2014.03.31

Abstract

This study tried to develop a basis for quantitative index of working postures associated with WMSDs (Work-related Musculoskeletal Disorders) that could overcome realistic restriction during application of typical checklists for WMSDs evaluation. The baseline data(for a total of 603 jbs) for this study was obtained from automobile manufacturing company. Specifically, data for back posture was analyzed in this study to have a better and more objective method in terms of job relevance than typical methods such as OWAS, RULA, and REBA. Major statistical tools were clustering, logistic regression and so on. The main results in this study could be summarized as follows; 1) The relationship between working posture and WMSDs symptom at back was statistically significant based on the results from logistic regression, 2) Based on clustering analysis, three levels for WMSDs risk at back were produced for flexion as follows: low risk(< $18.5^{\circ}$), medium risk($18.5^{\circ}{\sim}36.0^{\circ}$), high risk(> $36.0^{\circ}$), 3) The sensitivities on risk levels of back flexion was 93.8% while the specificities on risk levels of back flexion was 99.1%. The results showed that the data associated with back postures in this study could provide a good basis for job evaluation of WMSDs at back. Specifically, this evaluation methodology was different from the methods usually used at WMSDs study since it tried to be based on direct job relevance from real working situation. Further evaluation for other body parts as well as back would provide more stability and reliability in WMSDs evaluation study.

Keywords

References

  1. 한국산업안전보건공단(2011), "산업재해통계", http://www.kosha.or.kr/board.
  2. 노동부(2010), "산업재해현황분석", http://www.index.go.kr/egams/.
  3. 김정룡(2004), "작업관련성 근골격계질환 예방을 위한 인간공학", 민영사.
  4. 한국산업안전보건공단(2008), "근골격계질환 부담작업 유해요인조사 지침 KOSHA Code H-30", 한국산업안전공단.
  5. Altman, D.(1991), "Practical Statistics for Medical Research", Chapman & Hall, London, pp. 403-409.
  6. Armstrong, T., Buckle, P., Fine, L., Harberg, M., Jonsson, B., Kilbom, A., Kuorinka, I., Silverstein, B., Sjogaard, G. and Viikari-Juntura, E.(1993), "A conceptual model for work-related neck and upper-limb musculoskeletaldisorders", Scandinavian Journal of Work, Environment and Health, 19(2), pp. 73-74. https://doi.org/10.5271/sjweh.1494
  7. Bernard, B. (Ed.)(1997), "Musculoskeletal disorders and workplace factors: A critical review of epidemiological evidence for work-related musculoskeletal disorders of the neck, upper exterimity, and lower back". DHHS(NIOSH)Publication No. 97-141, US Department of Health and Human Services.
  8. 곽원택(2006), "인간공학적 작업부하평가 도구에 따른 근골격계 부담작업 평가 결과의 차이", 한경대학교 산업대학원, 석사학위 논문.
  9. 기도형, 박기현(2005), "작업 자세 평가 기법 OWAS, RULA, REBA 비교", 한국안전학회지, 20(2), pp. 127-132.
  10. 이인석, 정민근, 최경임(2003), "지각불편도를 이용한 관찰적 작업자세 평가 기법의 비교", 대한인간공학회, 22(1), pp. 43-56. https://doi.org/10.5143/JESK.2003.22.1.043
  11. 신용철(2004), "Rapid Entire Body Assessment의 신뢰도 및 타당성 평가", 한국산업위생학회지, 14(1), pp. 1-6.
  12. Brujin, I., Engle, A. and van der Gulden, J.(1998), "A simple method to evaluate the reliability of OWAS observations", Applied Ergonomics, 29(4), pp. 281-283. https://doi.org/10.1016/S0003-6870(97)00051-3
  13. Mattila, M., Karwowski, W. and Vilkki, M.(1992), "Analysis of working postures in hammering tasks on building construction sites using the computerized OWAS method", Applied Ergonomics, 24(6), pp. 405-412.
  14. Hair, J. Jr., Anderson, R., Tatham, R. and Black, W.(1995), "Multivariate Data Analysis with Reading", Prentice Hall.
  15. Johnson, R. and Wichern, D.(2007), "Applied Multivariate Statistical Analysis", Prentice Hall.
  16. Hignett, S. and McAtamney, L.(2000), "Rapid Entire Body Assessment(REBA)", Applied Ergonomics, 31(2), pp. 201-205. https://doi.org/10.1016/S0003-6870(99)00039-3
  17. 정충영, 최이규(1996), "SPSSWIN을 이용한 통계 분석", 무역경영사.
  18. May, S. and Lomas, D.(2010) "Posture, the Lumbar Spine and Back Pain", International Encyclopedia of Rehabilitation, pp. 1-8.
  19. 김영선, 권오준, 김기식, 구권호(2012), "한국 근로자의 요통 유병률과 근로환경의 연관성에 관한 연구", 한국산업위생학회지, 22(2), pp. 107-118.